Year	current US$
1970	1346009959.3997004
1971	1567140033.0215669
1972	1282900030.1957135
1973	1627030030.7869911
1974	2386080029.2491894
1975	3645119996.547701
1976	3524409965.9919777
1977	2689980008.1253057
1978	3175459967.6132174
1979	3734830011.844638
1980	5165000008.583074
1981	4403800014.495854
1982	4410139938.354489
1983	4137610047.340398
1984	4014049960.1364136
1985	3910670017.2424374
1986	4908209950.923924
1987	4831699957.847594
1988	5577089937.210083
1989	5612420061.11145
1990	5245440057.754514
1991	7191970027.923594
1992	5958269886.016849
1993	4613720020.294193
1994	6117210092.544563
1995	4453159961.70044
1996	4488510042.19055
1997	4074329994.201661
1998	4284769922.2564745
1999	3822920022.9644823
2000	3644300041.1987286
2001	5534260005.950924
2002	6386380079.269415
2003	5672769973.754889
2004	6732410093.307509
2005	9017530021.667492
2006	8630770008.087164
2007	10817159828.186033
2008	11029809799.194342
2009	13631290325.164804
2010	14838659828.186043
2011	16698280357.360847
2012	13999030078.887947
2013	13871940219.879166
2014	15501880256.652847
2015	15596229959.487919
2016	13754680145.26368
2017	14906799999.237068
2018	12130689971.923851
2019	14852809936.523449
2020	16458270339.965822
2021	17474579917.907726